Index: shaders/SimpleVertexShader.vertexshader
===================================================================
--- shaders/SimpleVertexShader.vertexshader	(revision 8a6d19d6c4540451e6eec71a5309028c58372af5)
+++ shaders/SimpleVertexShader.vertexshader	(revision 8a6d19d6c4540451e6eec71a5309028c58372af5)
@@ -0,0 +1,12 @@
+#version 330 core
+
+// Input vertex data, different for all executions of this shader.
+layout(location = 0) in vec3 vertexPosition_modelspace;
+
+void main(){
+
+    gl_Position.xyz = vertexPosition_modelspace;
+    gl_Position.w = 1.0;
+
+}
+